Improvement in machines tor attaching- rivets to buttons



specification, and in whichtanned gittata aan eine.

J. JOHNSON nnn'vnsr, OF Nnw YORK, N. Y.Y

Letters Patent No. 58,512, dated January 4, 1870.

I The Schedule xefe'rred to in these Letters Patent and making part of the same.

To all who-m 'it may concern:

Be it known that I, J. JOHNSON Mnnvnsr, of the city, county, and State of New York, have invented a new and useful Improvement in Dies for Rivetihg `Buttons to Cloth, &c.; and I do hereby declare v.the following to be a full, clear, and exact description thereof, sui'icientto enable those skilled in the art to which my invention appertains, to fully understand and to make and use the same,'reference being had to the accompanying drawing, formingpart of t-liis Figure l is a side elevation of the device complete.

Figure 2, a longitudinal vertical section of thesame.

Figures 3 and 4, longitudinal sections, 'showing modifications of the lower die. Figures 5, 6, and 7, are detail views, to be hereinafter referred to. l

My invention is an improved'device by means of which buttons are riveted to wearing-apparel'and other fabrics; and

It consists in the construction, arrangement, and combination of parts, as hereinafter' specilied.

. 1 will vnow proceed to describe my invention in detail, referring to theaccompanying drawings, wherein similar letters indicate like parts in the several figures.

In the drawiugs- Y A is a circular metallic block or die, formed with two faces, a b.

In the side of this die a hole is made for the recep tion oi' the lower end c of a-spiral spring, C, which is coiled around' a shank, D, screwed intoa nut, E.

lhe shank-D is provided with a central longitudinal socket, in which a punch, d, is tted rigidly. This punch projects downward below the shank D, and its lower -portion ts loosely into a central opening `-in the die A.

Into the upper side of the nut E is screwed a handie, F f. The upper end ofthe spring Cabuts against theunder side ot' the nut E, and t ie pressure of this spring is regulatedv by screwing theshank'D more or less into the nut Y 'lh'e face trof the die A is formed with a concentric rim, g, extending around the outeredge, and with a rounded elevation, fi, around the central opening lof the die.

The face b of thedie A is made without a rim, and is provided with a depression, j. It will be understood that the end cofthe spring C is loosely fitted into the sideof' the die, so as to permit Vthe latter to be turned on said part o as a pivot or centre, in order to present either of the faces a b downward.

-.-'Ihe `lower end of the ,punch fl is countersunk, as

lshown clearly in iig. 7, so as to form a rounded head on the rivet.

`The xivetis inserted from the under side into the 'central opening ofthe die A, and is there retained by a screw,I k, pressed inward against the rivet by a dat spring, l. This spring is secured at one end to the side of the die', and through its free end the screw It is fitted.A This screw works loosely in an opening ricade at right angles to theV centralopening of the die A, and communicating therewith.

The lower die B is, like the upper die, reversible,

being formed with two faces, m n, and tted loosely on to the upper end of a punch, o, fixed in the shank H,'which is screwed into a base, I The die B rests on a spring, G, encircling the shank H, and regulated in the same manner as is the spring C.

. I will now proceed to describe the operatiomof my device, when a rivet of the form shown at p is used.`

After slightly liattening the lower Vend ot' the rivet, a washer, r, Iig'. 1, is slipped over thesinaller end, and allowed to rest on the fiat-tened portion. "Ille rivet is now inserted into the central openingot' the upper die,

and is-held in place by the pressure of the spring-piu k, the washer occupying the depression in the under side of the die A.

The button-is next laid, face down, upon the upper surface of the under die. The cloth is laid on the top of thebutton, and the upper die is forced downby pressure, or a stroke on the head j'. As this pressure is applied, therivet passes through the cloth and button, and down to the punch o, andon account of the. countersunk ends of the punches o and (Z, ahead is formed on each end of the rivet, thereby securing the button tothe fabric.

- The space between the top of the punch o and the upper face of the lower die is lessened 'oir enlarged by screwing the shank H more or less into the base I.

By this adjustment the size ofthe headraised on therivet is regulated. V

When a rivet having one head already formed, as shown in lig. 5, is used, the dies A, Bare reversed, so that the faces shown uppermost in iig. 2 areV turned underneath. The shank H is then partially unscrewed from its base I. This brings the top of punch o on a level with the bottom of' the depression in the face n.

of die B. 'lhe rivet is put through the cloth by means of a needle, hollow at one end. rIfhe head ofthe rivet` is now placed in the depressionin the upper face o die B, while its plain end extends up through a hole in the centre of the button, 'a short distance into the central opening ofthe upper die.- It will be seen that when the upper die and its punch are now forced down, a head will be formed on the upper 4cud of the rivet, the lower end, already headed, remaining unaltered.

- A modilicat-ion ot' the lower-die support may `be 4made by forming thev base and shank in one solid piece, having a central vertical opening for the punch, which latter may be driven out and replaced by a new one when desired.

To compensate for the adjustability secured by screwingrthe shank into the base, I place a washer loosely around the shank, between the base and the spring. This washer is .employed when a plain rivet is fused, but when a rivet havingone head already formed is used, the washer is removed and the die re: yersed, as above described, whereby the spriu g descends and occupies the space before occupied by the washer, allowing the upper surface of the die to come even with the top of the punch.

In tig. 3 is shown a modification of the lower die and support. It is formed with a depression and recess, c', for the head of a rivet, which is already formed with one head. y

I In lig. 4 is represented a modification of fig. 3. This is employed when a plain rivet is used. It is similar to that shown in iig. 3, with this exception: while the modification shown in Iig. 3 is formed with a depression in its top, that represented in g. 4 is made with a raised projection, which has in its top a slight cavity, provided on its inside with vertical cutting-edges,

at right angles to each other, which raise a burr on the end of the rivet when pressed against it.

' I will here mention that these moditications ofthe lower support and die are all used with, the upper die, shown in rigs. 1 and 2.

In iig. 6 is shown a modification to be usedwhen rivets previously formed with heads at one end are employed. In this case a thimble, C', encircles the upper part of shank H, and is supported on the spring It'. rlhe rivet is set in the recess iormed by the thimble and shank, where it stands upright.

Now, the cloth having been laid on the top of the thimble C', the button t is placed in the recess in the face of the die b2, where it is held by the spring c.

' rlhis spring is soldered to the die b2, about the centre,

and the ends keep the button in place. The operation is as above4 described.

The central opening in the. shank H is of the same diameter throughout, excepting for a short distance at the lower end, where it is made smaller, as shown in the drawing, so that when the punch is inserted, it rests on the shoulders at the junction of the large with the small opening. The chiet` object of this construction, and the arrangement of the punch in a socket so made, istogfacilitate the removal of the punch when broken.

Having thus described my invention, I wish to state that I do not claim the modication shown in fig. 6, andabove described, a loose thimble or under die, encircling a shank and resting`on a spring, not being new; but g What I do claim as new,.and desire to secure/.by Letters Patent, isf/ l. The reversible dies A B, formed each with two different faces, substantially as and for the. purpose herein set forth. f

2. The combination of the die A, shank D, spring C c, and countersunk punch (l, all constructed 'and arranged suhstantia-lly asherein described.

3. The arrangement of the die A, extending below the lower end of the punch d, to form a recess which receives the rivet, and prevents it from bending while the head is being formed. v

4. The reversible lower die B,ftted on the punch o, and supported by the spring G, which encircles shank H, to'be regulated by the nut l, as herein described.

5. The reversible dies A B, conntersunk punches d 0,'rivet-holding spring-pin k l, Shanks D l, nuts E I,l

and shank F, all constructed, arranged, and combined to operate as herein described.

To theabove I have signed my name, this/17th day ofDccember, 1868.

J. J. MERVESP.

Witnesses: f

TH. A. STADLER, E. N. Lonw. 

